How to Identify Robust Eel Blenny

To identify Robust Eel Blenny (Notograptus robustus), look at these key features.

Physical Characteristics

Body shape

eel-like

Coloration

Generally mottled brown to reddish-brown, often with darker blotches or bands along the body, providing camouflage against rocky or sandy substrates. The coloration can vary to match the local environment.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Extremely elongated, cylindrical body, tapering towards the tail., Long dorsal and anal fins that are continuous with the caudal fin, forming a single median fin fold., Small, pointed head with a relatively large mouth., Absence of pelvic fins.

Dorsal fin

Very long, originating just behind the head and extending continuously to the caudal fin. Composed of numerous soft rays.

Tail fin

Small, rounded, and confluent with the dorsal and anal fins.

Pectoral fin

Small and rounded, positioned low on the body.

Distinctive fins

Pelvic fins are absent. The dorsal, anal, and caudal fins form a continuous, ribbon-like structure along the posterior half of the body.

Identification Tips

1. 1

   Body Shape

   Its extremely elongated, eel-like body is a primary identifier, distinguishing it from most other blennies.

2. 2

   Fin Structure

   The continuous dorsal, anal, and caudal fins forming a single median fin fold, coupled with the absence of pelvic fins, is highly characteristic.

3. 3

   Coloration

   Mottled brown to reddish-brown patterns help it blend into its benthic habitat.

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